diff options
| author | Jason Wang <[email protected]> | 2018-08-24 16:53:13 +0800 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2018-08-25 17:39:41 -0700 |
| commit | 2d66f997f0545c8f7fc5cf0b49af1decb35170e7 (patch) | |
| tree | 3089fb25f6dca1d8292711b2267e1feb4661ec04 | |
| parent | 6750c87074c5b534d82fdaabb1deb45b8f1f57de (diff) | |
vhost: correctly check the iova range when waking virtqueue
We don't wakeup the virtqueue if the first byte of pending iova range
is the last byte of the range we just got updated. This will lead a
virtqueue to wait for IOTLB updating forever. Fixing by correct the
check and wake up the virtqueue in this case.
Fixes: 6b1e6cc7855b ("vhost: new device IOTLB API")
Reported-by: Peter Xu <[email protected]>
Signed-off-by: Jason Wang <[email protected]>
Reviewed-by: Peter Xu <[email protected]>
Tested-by: Peter Xu <[email protected]>
Acked-by: Michael S. Tsirkin <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
| -rw-r--r-- | drivers/vhost/vhost.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index 96c1d8400822..b13c6b4b2c66 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -952,7 +952,7 @@ static void vhost_iotlb_notify_vq(struct vhost_dev *d, list_for_each_entry_safe(node, n, &d->pending_list, node) { struct vhost_iotlb_msg *vq_msg = &node->msg.iotlb; if (msg->iova <= vq_msg->iova && - msg->iova + msg->size - 1 > vq_msg->iova && + msg->iova + msg->size - 1 >= vq_msg->iova && vq_msg->type == VHOST_IOTLB_MISS) { vhost_poll_queue(&node->vq->poll); list_del(&node->node); |